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Steve B
member
Reged: 12/28/06
Posts: 11
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Can you tell me what the distance is between the outer edges of the objectives of the Strathspey 15x70 when in viewing position. I'm considering buying them to use with the Binoflex mirror mount but thought they might be too wide for the mirror. Thanks.
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JohnnyC
member
Reged: 05/25/06
Posts: 67
Loc: London, UK
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Steve,
If I understand you correctly and you actually mean the edge of the "objectives", I measure it at about 20.2cm. This is with the barrels at their widest. Because of the rubber armouring though, the equivalent distance to the "outside" of each barrel is another 1cm. Hope that helps.
John
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Steve B
member
Reged: 12/28/06
Posts: 11
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Thanks for that John. The width of the Binoflex mount mirror is also 20.2cms.
Steve
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NairB
member
Reged: 11/11/06
Posts: 49
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I agree with JohnnyC at 20.2cm on both the Strath's and Celestrons.
I'm still waiting for a clear sky!!
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Strathspey 15x70's FMC - Amazing cheap bino for the price. Bright, natural color/contrast, sharp, and well collimated. Best for Daytime viewing 
Celestron Skymaster 15x70's MC - Field of view has a Smoky/Brown tint making them less bright during daytime viewing BUT this doesn't seem to affect night time viewing...Testing against the Strath's continues!!!
Oberwerk Lightweight 20x80mm FMC - Arrived - Had to collimate them. Undergoing tests.
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Steve B
member
Reged: 12/28/06
Posts: 11
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I still don't fully understand how you use double stars to check the collimation of binoculars. Is it just a matter of whether they can be split or not? If so can anyone recommend a winter double which I could use to check the collimation of a pair of 15x70's. Thanks.
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12789
Loc: Cumberland, R I , USA42N71.4W
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You can very easily check collimation on a single star. If they instantly merge, then collimation is fine.
Checking collimation on a double star of known separation allows you to not only see it (if it is present), but also to measure it.
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
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